IBM Mainframe Forum

Hi,

i have a librairy whiche is currently updated. So i often compress it.

I want to chnage this library to PDSE. But i dont know if there is a risk...

This library is updated by a STC really often. As soon as o job is submetted by TWS, the STC take the job (which is in SDSF) and move it to the library.

Is there any risk about the time answer...

Thanks for you help.

Hello,

Is there any risk about the time answer...

Please clarify. . .

Hi,


i mean about the time it take to access the PDS (response time).

Hello,

Probably no significant performance difference.

If lots of updates/adds/deletes occur, it may help to periodically reorg the datasaet.

Ok, so i don't see why i would choose a PDSE instead of a PDS because, i compress the PDS.

If i have to reorg a PDSE, i have the same problem...

No, a PDSE does not need compression. However, please research the known problems of using PDSE before making any changes. Sharing a PDSE across multiple LPARs is not usually a good idea.

Hello,

it may help to periodically reorg the datasaet

While a compress/reorg is not necessary, there may be a bit of a performance hit if the file becomes completely fragmented. . .